Anand Jon Alexander — the once high-flying fashion designer who’s serving 59 years in prison for rape — is suing the California Department of Corrections and Rehabilitation after he was stabbed repeatedly in the face by an inmate.

Alexander says he was “waiting by the telephones at R.J. Donovan State Prison to call his mother for her 70th birthday” in May 2019 when “he was the victim of a grievous assault perpetrated by another inmate,” court docs claim. His lawyers say the attack on India-born Alexander was “likely a racially motivated hate crime” and “caused grave bodily injuries, including multiple stab wounds to his face and right eye,” plus “five facial fractures” and various other injuries.

The suit claims the prisoner behind the attack wasn’t meant to be in contact with Alexander, but was able to “sneak up” and “stab [him] multiple times in the face. While bloodied and blacked out on the floor, [Alexander] was kicked and beaten.”Alexander, 43, who appeared on “America’s Next Top Model” and once reportedly dressed Paris Hilton, also received death threats, court docs said, but “it took over 10 days” before he was transferred to “an appropriate sensitive-needs” area. The suit, seeking punitive damages, alleges the jail failed to follow its own rules or refer the case to the local district attorney.

When he finally was moved to another wing, “two weeks later . . . the Menendez brothers are there with me,” Alexander told us, adding he and Erik Menendez [who with brother Lyle are serving life for shooting their parents to death in 1989] are buddies. Twelve years into Alexander’s sentence, for luring women and girls to his apartment on the pretext of modeling work, he maintains his innocence, saying the encounters were consensual. The American Justice Alliance has submitted an amicus brief in his case.“Federal court is scrutinizing what happened, and it’s looking very good,” he said. “In 2008 when I walked into trial, I was an artist, a party boy . . . I lived as a typical downtown party boy, but California was a nightmare — the same New York attitude was taken out of context.”

Alexander said he hopes more recent “progressive prosecutors” in California would review his case.